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Feedmaker: URL + CSS selectors = RSS feed

67 points

by mustaphah

4 hours ago

| past

| 6 comments

| feedmaker.fly.dev

| HN

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kschaul

2 hours ago

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Glad you’re find the tool interesting! A short blog post behind it: https://kschaul.com/post/2023/04/16/feedmaker-quickly-genera...

And the GitHub url (hopefully easy to host your own instance): https://github.com/kevinschaul/feedmaker

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mustaphah

1 hour ago

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Looks like you're hosting this on fly.io - PAYG model. You could probably host this for free on Cloudflare Workers; 100k requests/day on the free tier; static content (the homepage) is free & unlimited.

Edit: The catch is the 10ms CPU cap per request - you'd need a super lean implementation. Django's too heavy for that.

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mustaphah

46 minutes ago

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Well, someone already did with JS: https://github.com/ProfessorManhattan/rss-worker

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0cf8612b2e1e

1 hour ago

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Python alone is many milliseconds to start. Unless they give you some allowances for interpreter overhead.

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mustaphah

3 hours ago

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The good news: made it to the front page.

The bad news: so did the 503 page.

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benbristow

2 hours ago

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In some ways a good thing, no? Shows you've got work to do on optimisation for large audiences. A free stress test (unless you're on a host that charges per hit or bandwidth excess), as you will.

Did load eventually for me, thought it was broken as no styles but looks like it's intentional.

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uyzstvqs

2 hours ago

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Seems to be hosted using fly.io

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bradbeattie

2 hours ago

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https://github.com/RSS-Bridge/rss-bridge is what I've been using for the same purpose.

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crazygringo

2 hours ago

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I love this.

Has anyone tested to see if it works with Blogtrottr which will email you whenever there's a new item in an RSS feed?

Just since this doesn't seem like it even includes a date field in the RSS? And of course no guid. So I'm wondering how compatible it winds up being.

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kevincox

1 hour ago

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Dates shouldn't matter. The feed has ID elements which is what identify entries. Atom has no guid element. So I would expect this to work with any reader.

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int0x29

2 hours ago

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I made a CGI program that ran CSS selectors against URLs and returned the output. I debated making it public and then realized I probably didn't want to run an open proxy. I'm curious how long this will last.

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zekenie

2 hours ago

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Not the same but this gives me an idea… what if there was a map reduce for doms as a web primitive. Like imagine if I could make a dom (or feed) that was some selection and transformation of another dom

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onedognight

2 hours ago

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You have just re-invented XLST.

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1-more

2 hours ago

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https://www.w3schools.com/xml/tryxslt.asp?xmlfile=cdcatalog&... give it a whirl!